Whenever Ridgley Has a Headache, He Takes Two Aspirin Tablets

Multiple Choice

Whenever Ridgley has a headache, he takes two aspirin tablets. Shortly thereafter, the pain goes away. The next time the headache shows up, Ridgley is more likely to take an aspirin. In learning theory, we would say that Ridgley's behavior of taking the aspirin has been

A) ​negatively reinforced.
B) ​positively reinforced.
C) ​negatively punished.
D) ​positively punished.